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This is a discussion on HP gains within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Originally Posted by etshulda The cold air and Blitz Nur only gives me 8 extra BHP....thanks for the clarification fellas ...

  1. #16
    Registered User BillFromTR's Avatar
    Join Date
    Mar 2005
    toms river, NJ
    Quote Originally Posted by etshulda View Post
    The cold air and Blitz Nur only gives me 8 extra BHP....thanks for the clarification fellas
    Where did you get that number from? Do you get the drivetrail loss dyno numbers idea?
    05 STi for sale, 400hp, 50k miles, only 17k

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  3. #17
    Registered User etshulda's Avatar
    Join Date
    Oct 2007
    NH USA


    "add 5 horsepower with your catback then possibly subtract 2 for your CAI. buy the more significart of your exhaust " I guess that makes it only 3...I was thinkin you said 10 for catback

  4. #18
    Join Date
    Jun 2007
    Great Salt City of Utah
    -20 hp
    I bet, because of all the timing being pulled because of bad MAF readings.

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  6. #19
    Master Baiter EJ257's Avatar
    Join Date
    Aug 2007
    On a stream bank somewhere
    I Support ClubWRX
    General rule - CBE = noise-maker (little, if any, performance gain)

    If you want to get performance, the DP has 2 catalytic converters in it, and is restrictive on your engine. Get an aftermarket DP that is catless (removes both cats) or one with a high-flow cat and some EM, and you'll be liking your results.

    Intakes/CBE do basically nothing for our car other than enhance the sound - as said, an intake can actually reduce the power of your vehicle (by making the car run lean).
    2016 Toyota Tacoma TRD Off-Road - Daily
    2005 WRX STi (Mods | Virtual Dyno) - Toy

    Resident Tuner @ WTF Tuning

    "Never trust anything that bleeds for a week and lives ..."


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